88
SJ30AJE, SJ30ARJE196274AF
Section 4 – Troubleshooting Information Electrical System
14. Loose or broken wire #162 or #02 from base
terminal block to relay 162CR.
Check continuity. Replace if defective.
15. Loose or broken wire #10B from relay 162CR to
base enable switch S21.
Check continuity. Replace if defective.
16. Open or defective base enable switch S21. Close switch. Replace if defective.
17. Loose or broken wire #10A from base enable
switch S21 to base terminal block.
Check continuity. Replace if defective.
18. Open or defective diode D10A or D10A-1. Check diode. Replace if defective.
4.2-5 No Boom Up from Base Control Console
1. Loose or broken wire #10A from enable switch
S21 to boom switch S20.
Check continuity. Replace if defective.
2. Defective boom switch S20. Check continuity through switch while activating
up function between wires #10A and #14. Replace
switch if no continuity found.
3. Loose or broken wire #14 from boom switch S20
to base terminal block.
Check continuity. Replace if defective.
4. Open or defective diode D14. Check diode. Replace if defective.
5. Loose or broken wire #71 from base terminal
block to motor control harness A.
Check continuity. Replace if defective.
6. Loose or broken wire #71 from motor control
harness A pin #20 to left motor controller pin
#LM20.
Check continuity. Replace if defective.
7. Loose or broken wire #14 from base terminal
block to main manifold harness pin #2.
Check continuity. Replace if defective.
8. Loose or broken wire #14 from main manifold
harness plug pin #2 to boom up valve 4H-14.
Check continuity. Replace if defective.
9. Loose or broken wire #02 from main manifold
harness plug to boom up valve 4H-14.
Check continuity. Replace if defective.
10. Defective boom up coil 4H-14. Check continuity and resistance through coil.
Replace if defective.